Change the color of a mesh

Three ways to do it:

1) white arrow pointer and select each anchor point and change the colours with the color palet

2) eyedropper: choice your color in the colour palet and holt on the alt-key so you reach the eyedropper filler and clic on anchor points or surfaces.

3) Select your object and use Recolor artwork circle.

Good luck.

you could select individual points in the mesh by clicking on them (white arrow) and adjust the colour, or select the whole thing (black arrow) and use edit > edit colours > recolour artwork.