:root { --breakpoint-background: url("chrome://devtools/skin/images/breakpoint.svg#light"); --breakpoint-hover-background: url("chrome://devtools/skin/images/breakpoint.svg#light-hover"); --breakpoint-conditional-background: url("chrome://devtools/skin/images/breakpoint.svg#light-conditional"); } .theme-dark:root { --breakpoint-background: url("chrome://devtools/skin/images/breakpoint.svg#dark"); --breakpoint-hover-background: url("chrome://devtools/skin/images/breakpoint.svg#dark-hover"); --breakpoint-conditional-background: url("chrome://devtools/skin/images/breakpoint.svg#dark-conditional"); } .breakpoint .CodeMirror-linenumber:before { background-image: var(--breakpoint-background) !important; } .conditional .CodeMirror-linenumber:before { background-image: var(--breakpoint-conditional-background) !important; } .CodeMirror .error { background-image: url("chrome://devtools/skin/images/editor-error.png"); }