What's this avant garde piss stain coloring?

Base +6, idle all day +6, nodire +6, sadasdas +18, Lordly brush +6, anomahous +12, FooI +6, greatredone +6, BFBK +6, IMNC +7, LemonKick -6, rishou +7, Shinsakusakulover +8, and 19 more...

Is this water damage? WTF

Base +5, LemonKick -6, GeneralButt +6, kurt303 +6, Danjian +6, anonomys1 +6, kentrell leonard69 +6, pollaco +11, Gottahaveausername -6, gfvr220789 +6

Truly a nostalgic scan.

Base +6, LemonKick -6, wyredstarryn +10, Gottahaveausername -6

I literally thought that someone spilled something on it and scanned it, anyways

Base +25, SecretiveGamer +14, jplshejeser +24, as102 +13, Raiya95 -10, kentrell leonard69 +6, Gottahaveausername -6, gfvr220789 +6

Colored with piss.

Base +26, Raiya95 -10, Sotto +7, nipponica +14, kentrell leonard69 +6, pollaco +11, Gottahaveausername -6, gfvr220789 +6, Orengestar +7

literally thought the colour had something to do with the plot until like page 10, like she'd possessed by a slime or smth

Base +5, Gottahaveausername -6, gfvr220789 +6