I always feel that there is not enough color in this world. I always look at the colors as RGB and the mix. So only 3 colors. If you count in-between them, it will be about 7 colors total. The rest is gradient colors.
Don't be sad... We need to always mix. Never leave the color as plain. Look around us. There is no natural object that has only one color. Right? Trees, for example, is not just green.
But be careful ... if you mix it too much it will become 'taik' 😜
btw.. nice drawing. so cute