nah, he wants it so when you die, blood appears around you
i would use:
0[500]onplayertouch>self>vce_ifvalue[<var:pl:health>][==][0][1 3]
1[0]onvariabletrue>self>setcolor[red]
2[5000]onvariabletrue>self>setcolor[color]
3[0]onvariablefalse>self>setcolor[color]
4[0]onplayertouch>self>cancelevents
this will make it so it turns red after 0.5 seconds of death, and stay there for 5 seconds or until somebody walks in it