Giscuss Theme for baweaver.com as a test.

giscuss_theme.css

/*! Custom Giscus theme for baweaver.com */
main {
  --color-canvas-default: transparent;
  --color-canvas-subtle: #e8e0d2;
  --color-border-default: #b8a890;
  --color-border-muted: #d0c4b0;
  --color-neutral-muted: rgba(74, 60, 122, 0.08);
  --color-accent-fg: #4a3c7a;
  --color-accent-emphasis: #4a3c7a;
  --color-fg-default: #1f1b1a;
  --color-fg-muted: #4b463f;
  --color-fg-subtle: #706776;
  --color-btn-bg: #e8e0d2;
  --color-btn-border: #b8a890;
  --color-btn-hover-bg: #d9d0c0;
  --color-btn-hover-border: #4a3c7a;
  --color-btn-primary-bg: #4a3c7a;
  --color-btn-primary-border: #4a3c7a;
  --color-btn-primary-text: #f7f1e8;
  --color-btn-primary-hover-bg: #56639a;
  --color-primer-shadow-inset: 0 0 transparent;
}

main .gsc-comment-box {
  border-color: #b8a890;
}

main .gsc-header {
  border-bottom-color: #b8a890;
}

main .gsc-comment {
  border-color: #d0c4b0;
}

main .gsc-timeline {
  border-color: #d0c4b0;
}

main .gsc-comment-box textarea {
  background: #faf6f0;
  border-color: #b8a890;
  color: #1f1b1a;
}