text: tissue_correspondance = [
      ['Breast', 'TCGA-BRCA'],
      ['Skin', 'TCGA-SKCM'],
      ['Large Intestine', 'Small Intestine', 'TCGA-COAD', 'TCGA-READ'],
      ['Lung', 'TCGA-MESO', 'TCGA-LUAD', 'TCGA-LUSC'],
      ['Head and Neck', 'TCGA-HNSC'],
      ['Prostate', 'TCGA-PRAD'],
      ['Pancreas', 'TCGA-PAAD'],
      ['Brain', 'Central Nervous System', 'TCGA-GBM', 'TCGA-LGG'],
      ['Blood', 'Haematopoietic and Lymphoid', 'TARGET-AML', 'TARGET-ALL-P2', 'TCGA-DLBC', 'TCGA-LAML'],
      ['Kidney', 'TCGA-KICH', 'TCGA-KIRC', 'TCGA-KIRP'],
      ['Ovary', 'TCGA-OV'],
      ['Uterus', 'TCGA-UCS', 'TCGA-UCEC'],
      ['Liver', 'TCGA-CHOL', 'TCGA-LIHC'],
      ['Thyroid', 'TCGA-THCA'],
      ['Stomach', 'TCGA-STAD'],
      ['Bladder', 'TCGA-BLCA'],
      ['Cervix', 'Vulva', 'TCGA-CESC'],
      ['Esophagus', 'TCGA-ESCA'],
      ['Peripheral Nervous System', 'Adrenal Gland', 'TCGA-PCPG', 'TCGA-ACC'],
      ['Bone', 'Soft Tissue', 'TCGA-SARC'],
      ['Testis', 'TCGA-TGCT'],
      ['Thymus', 'TCGA-THYM'],
      ['Eye', 'TCGA-UVM'],
      ['Endometrium']
  ]
  
  colors = ['green',
            'red', 
            'darksalmon',
              'orchid',
            'gold', 
            'olivedrab', 
            'deepskyblue', 
            'navy',
            'm', 
            'sandybrown',
            'slategray',
            'chocolate',
            'silver',
            'coral', 
            'magenta',
            'orange',
            'violet', 
            'yellowgreen', 
            'pink', 
            'orchid',
            'darkblue',
            'plum',
            'khaki',
            'sienna',
            'tomato']
  assert len(colors) >= len(tissue_correspondance)