8 tumor 0 255 0
5 sacral_discs 255 255 0
3 neural_structures 158 135 255
4 rectum 194 84 12

[Bones] 255 255 255

1 sacrum 255 255 209
2 ileum 255 255 255

[Muscles] 255 128 122

6 left_m_glut_max 255 135 120
7 right_m_glut_max 255 135 120
9 left_m_piriformis 255 135 120
10 right_m_piriformis 255 135 120