A simple css snippet that extends the minimalist obsidian theme with custom colors for headers

colors.css

/* colors of italics in Edit mode all notes in a vault */
.cm-em, em {
    color: #ffb86c !important;
}

.cm-strong, strong {
    color: #ff5555 !important;
}

/* headings for editor and preview */
.cm-header-1, .markdown-preview-view h1
{  
  color: #ff79c6 !important;
}

.cm-header-2, .markdown-preview-view h2
{  
  color: #bd93f9 !important;
}

.cm-header-3, .markdown-preview-view h3
{
  color: #F49145 !important;
}

.cm-header-4, .markdown-preview-view h4
{  
  color: #ffb86c !important;
  font-variant:normal !important;
}

.cm-header-5, .markdown-preview-view h5
{
  color: #94F434 !important;
  font-variant:normal !important;
}

.cm-header-6, .markdown-preview-view h6
{   
  color: #ff5555 !important;
  font-variant:normal !important;
}