1500 I would say that its impossible to find any color evidence from , styles ?? go to the mary rose ship website .
www.maryrose.org/ship/guns1.htm OK I know its an ship , but there are a few carriages there that clearly not are of naval origin , its 10 pages concerning the armourment of the ship . very interesting reading .
when it comes to 1600 and 1700 you find a lot of drawings at arkeliets website :
www.arkeliet.net go to : bildearkiv , there you just click on the book of your choice and you will find every page as an photo , all pages are able to be enlarged that you even can see if an fly have crap at the paper .
for anyone searching for european antique drawings on cannons and carriages this is the best site on the web . this are northern european drawings , but it was the same then as it is today , countries copied eachother and stole ideas and designs from eachother .
cant be sure but there would probably not be any big differences in design .
but when it comes to the spanish colors you should probably send an email to an spanish army or military museum . sorry but cant give you any addresses , try google .