RFCM

'Armies of The Mexican Revolution - Mike Blake' suggests

Blue service/garrison uniforms - often retained for parade
Khaki campaign uniforms - though the manual actually stated grey (hence why some officers wore grey)
White summer uniforms

Eye witnesses also suggest some units with blue denim uniforms.

Photos seem to suggest units mainly uniform but with oddments of other dress thrown in.

The table on page 17 states 4,5.6=movement of piece is allowed, but
the summary table on page 22 states 5,6=attacker can re-deploy piece.

Which is correct, I'm assuming  page 17 rather than the summary table ?