JustPaste.it
#outer,
#main,
.userstuff,
.userstuff p,
.userstuff div {
  background: #ffffff !important;
  color: #000000 !important;
}
 
body:has(.userstuff p.font-claude-response-body) #outer,
body:has(.userstuff p.font-claude-response-body) #main,
body:has(.userstuff p.font-claude-response-body) .userstuff,
body:has(.userstuff p.font-claude-response-body) .userstuff p,
body:has(.userstuff p.font-claude-response-body) .userstuff div {
  background: #ff0000 !important;
  color: #ffffff !important;
}
 
body:has(.userstuff p.ds-markdown-paragraph) #outer,
body:has(.userstuff p.ds-markdown-paragraph) #main,
body:has(.userstuff p.ds-markdown-paragraph) .userstuff,
body:has(.userstuff p.ds-markdown-paragraph) .userstuff p,
body:has(.userstuff p.ds-markdown-paragraph) .userstuff div {
  background: #ff0000 !important;
  color: #ffffff !important;
}