This is my first critique on anything that could be considered abstract art, so I hope everything here goes well.
Your use of color in this is different in that it seems to be made up of varying shades of similar colors, but at first glance the viewer likely sees many different colors. On closer inspection the many colors here seem to branch from red, green, and blue primary colors with others seen throughout. The end effect of many different types of color reflects your title.
Going by that, I personally see several different representations that this abstract could have. Going by a visualization I had while observing this, I can think of it as an actual party, and the varying heights and colors of the painted areas show us "people" of different shapes, sizes, ethnicity, etc, at a crowded "party". Or, you could simply have had a "party" experimenting with different colors and shades, in the end creating this piece.
My only criticism of this piece is that the upper area of it seems kind of empty compared to the excitement of the lower half of the piece.
It is certainly open to different kinds of viewpoints, but regardless I believe this is a nice looking piece that can make your mind envision different scenarios if you take the time to observe it for a bit. Great work!