Poster colour

The governing concept is colour perception in context. The same pigment can appear more or less bright because neighbouring colours create contrast effects, and a thicker or thinner dried layer changes the amount of light reflected from the surface. Option B is correct because the final painting may not reproduce the sample’s surroundings or coverage. A name, brush price, or paper size does not directly change this visual comparison.

The governing concept is controlled tint adjustment. Too much white can make a light blue appear chalky and can weaken its colour identity. Adding a small amount of the original blue restores chromatic strength without making the mixture unnecessarily dark; a dry test is important because poster colour may change in appearance as it dries. Thus option D is the best correction. Black or orange would distort the intended hue.

The governing concept is consistency of pigment load and layer thickness. When a shape receives more concentrated paint and a thicker deposit, it usually appears darker in value and stronger or brighter in intensity than neighbouring shapes. Hence option B explains both observed differences together. The names of shapes, the size of the paper, and a dry background do not by themselves create this paired change in colour appearance.

The governing concept is value modelling: planes facing different amounts of light should not have identical values. A light plane, a middle-value plane, and a darker plane create a clear value structure, helping the flat drawing read as a solid cube. Therefore option C is correct. Equal values remove the sense of form, unrelated colours distract from light logic, and a dark outline alone cannot show volume.

The governing concept is surface control during application. If excess paint collects in one area or the coating is thicker in some places, drying can leave raised or uneven areas that are felt by touch. Thus option D is correct. A good colour scheme concerns design, clean paper generally helps application, and a new brush is not itself a cause of texture. Controlling brush load and spreading an even layer prevents the problem.

The governing concept is prevention of cross-contamination. A clean palette, fresh water, and a brush washed before changing colours keep unwanted pigment from entering the next mixture. Therefore option A is correct and is the best working arrangement for colour purity. Dirty water and a shared unwashed brush transfer residual pigment, while mixing all colours beforehand destroys the separation needed for clear, vivid poster-colour applications.

The governing concept is opaque coverage over a dry layer. The lower colour remains visible because the edge has insufficient pigment coverage or an inconsistent coat. Applying a controlled second coat with the same suitable consistency restores opacity while keeping the edge even; therefore option B is correct. Adding water would reduce coverage, wetting the lower layer could disturb it, and mixing both colours would not repair the painted edge.

The governing concept is uniform surface application and directional reflection. Even when the pigment colour is identical, areas with different layer thickness or changing brush direction can reflect light differently, producing uneven sheen. Therefore option A is correct. A single paper colour, clean water, or a white palette does not normally create this local variation in gloss. A consistent final coat and controlled brush direction help reduce it.

The governing concept is that spatial depth depends on more than warm–cool colour contrast. If foreground and background have similar lightness, their forms may merge; if every edge is equally soft or equally sharp, distance is also unclear. Therefore, check value contrast and edge clarity: stronger value separation and clearer foreground edges can improve depth. Colour names, paper brand, and water temperature do not directly solve this visual problem.

The governing concept is balanced brush loading when working into a wet edge. An overloaded brush deposits excessive paint or water on the already wet stroke, displacing its liquid and pigment and creating a ridge, wave, or pushed edge. Therefore, excess paint or water is the likely cause. A flat surface usually helps control flow, using the same colour does not create displacement by itself, and a broad brush is not automatically problematic if its load is controlled.

The governing concept is controlled lettering and preservation of negative space. Small counters need a fine brush and paint with a workable, not runny, consistency. Excess water allows the dark colour to spread inward, while pressing harder widens the stroke and filling the counters first removes the intended white space. A light outline and careful stroke width would preserve these openings.

The governing concept is drying through the thickness of a water-based poster-colour layer. Its surface can feel dry while moisture remains below, especially when the coat is thick or conditions are humid. Brushing another layer too soon reactivates or disturbs the soft paint, causing lifting. The paper need not be damaged, and brush cleanliness or oil paint does not explain this behaviour. Allow fuller drying before recoating.

The governing concept is atmospheric perspective. Distant forms are usually suggested with lower contrast, softer edges, and often cooler or less saturated colour because intervening air reduces visual clarity. Reducing contrast and edge sharpness therefore makes the object recede, so option A is correct. Increased saturation, a dark outline, or a warmer colour generally attracts attention and pushes the object visually forward.

The governing concept is surface continuity in poster-colour correction. A patch can remain visible even when its hue is correct if its brush direction, thickness, drying mark, or texture differs from the surrounding area. Option A is correct because matching the stroke direction and layer thickness helps the correction merge visually. Adding black may change the value, washing the area can damage the paper, and matching only the colour ignores texture and reflected light.

The governing concept in poster-colour flat filling is uniform application before the paint dries. Keeping the mixture at a consistent thickness and placing connected strokes while the edges remain workable reduces overlaps and visible bands. Extremely thick paint may drag, changing direction randomly can make the pattern uneven, and forceful rubbing of a dry surface can damage the paper. Therefore, option B is the most suitable correction.