Quarks are a fundemental particles, not as small as
Leptons (and the family) but very small, there are 6
'Flavours'
1. Up
2. Down
3. Strange
4. Charmed
5. Top
6. Bottom
and three
'Colours' Green, Red Blue.
They exist in differnt charges +1/3 +2/3 -1/3 -2/3 three of these make up neutons protons...
A proton is made up of two +2/3(red and blue) quarks and a -1/3(green)quakr making a +1 charge!