Importance of colors in learning process?
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  an article that discusses the latest discoveries about how visualization, specially colors and moving images are important in the process of learning....It would be nice to know about a good book about it, but for now I need to start the project and I need an article in first place.


There is one free open access article by Lindelani Mnguni (2014) which funnily enough has a book reference in the quote I am putting below.

"Chunking" is the name given to a technique used to remember things learnt, and Mnguni's article discusses how visualisation helps with chunking, along with the idea that:


  there are at least four main factors that determine how humans “chunk” information, namely, closure, proximity, similarity and simplicity. The closure principle suggests that the mind tends to complete figures even in cases where information is missing. The principle of proximity (also referred to as the principle of contiguity) suggests that when visual features are placed closer to each other, they are perceived as a unit (Mullet and Sano 1995). According to the similarity principle, items that have commonalities such as shape, size, colour, texture and orientation are often grouped as belonging together (Mullet and Sano 1995). Finally, according to the simplicity principle, items are grouped together according to symmetry, regularity and smoothness. All these principles reflect the behaviour of the cognitive system towards new visual information that has been perceived. (Mnguni, 2014).


With regard to moving images, Mnguni also points out that:


  McClean et al. (2005) present evidence showing that student retention of content material in biology education is improved when such content is presented via a lecture coupled with the animations and when an animation is used as an individual study activity.


McClean et al. (2005) is also available free.

References

McClean, P., Johnson, C., Rogers, R., Daniels, L., Reber, J., Slator, B. M., ... &amp; White, A. (2005). Molecular and cellular biology animations: development and impact on student learning. Cell Biology Education, 4(2), 169-179.DOI: 10.1187/cbe.04-07-0047 PMCID: PMC1103718 PMID: 15917875

Mnguni, L. E. (2014). The theoretical cognitive process of visualization for science education. SpringerPlus, 3(1), 184DOI: 10.1186/2193-1801-3-184 PMCID: PMC4000355 PMID: 24790828

Mullet, K., &amp; Sano, D. (1994). Designing visual interfaces: Communication oriented techniques. New Jersey: Prentice Hall