uc son , ▁Arizona ▁have ▁identified ▁an ▁additional ▁six ▁types ▁based ▁on ▁a ▁combination ▁of ▁sty list ic ▁and ▁morph ological ▁characteristics . ▁For ▁bow ls ▁with ▁both ▁interior ▁and ▁exterior ▁decor ation , ▁the ▁exterior ▁style ▁is ▁l abeled ▁as ▁the ▁variant ▁( Example : ▁G ila ▁interior ▁with ▁a ▁T onto ▁exterior ▁would ▁be ▁l abeled ▁as ▁G ila ▁Pol ych rome : ▁T onto ▁Vari ant ) ▁ ▁All ▁types ▁within ▁this ▁w are ▁share ▁a ▁number ▁of ▁broad ▁categor ical ▁similar ities ▁although ▁over ▁a ▁roughly ▁ 2 5 0 ▁year ▁time ▁span ▁significant ▁variation ▁is ▁seen . ▁The ▁paste ▁is ▁generally ▁brown ▁to ▁re dd ish - b rown ▁in ▁color ▁and ▁is ▁temper ed ▁with ▁sand . ▁Gener ally ▁red ▁and / or ▁white ▁s lip ▁cover ▁both ▁the ▁interior ▁and ▁exterior ▁and ▁black ▁paint ▁is ▁used ▁on ▁one ▁or ▁both ▁surfaces , ▁usually ▁surrounded ▁by ▁white ▁rather ▁than ▁red ▁s lip . ▁Black ▁paint ▁is ▁most ▁commonly ▁organ ic , ▁but ▁a ▁mixture ▁of ▁organ ic ▁and ▁min eral ▁paint ▁appears ▁on ▁some ▁vessels . ▁Pet ro graph ic ▁anal ys es ▁have ▁shown ▁that ▁Ro ose vel t ▁Red ▁W are ▁is ▁produced ▁across ▁the ▁full ▁distribution al ▁range . ▁ ▁P into ▁Pol ych rome ▁P into ▁Pol ych rome ▁is ▁the ▁earliest ▁of ▁the ▁Ro ose vel t ▁Red ▁War es ▁and ▁dates ▁from ▁AD ▁ 1 2 8 0 ▁to ▁ 1 3 3 0 . ▁P into ▁Pol ych rome ▁vessels