The combination of colors make other colors. On the ROY G BIV scale, red and yellow make orange, yellow and blue make green, and blue and red make indigo and violet.
But in mixing of pigments or dyes for printing, the primaries normally used are cyan, magenta, and yellow. And for additive combination of colors, as in overlapping projected lights or in CRT displays, the primary colors normally used are red, green, and blue.
In any case, here are some color songs, with links I HOPE work in your country: