"Below are derived allele counts and total numbers of reads for SNPs that have a large effect on phenotype for 19 Minoan, Mycenaean, Neolithic Greek, and Bronze Age Anatolian genomes. Nonzero derived allele counts are highlighted. Note that small derived allele counts may be due to DNA damage:"
https://genetiker.wordpress.com/2017/08/04/phenotype-snps-for-minoans-and-mycenaeans/
At least one the Minoans had brown skin, while all of the Mycenaeans had light skin:
SLC45A2, rs16891982, Caucasoid light skin
Sample Population Date BC Derived/Total
I2937 Neolithic Greek 5460–5378 2/3
I9130 Minoan 2900–1900 1/1
I0070 Minoan 2000–1700 7/7
I0071 Minoan 2000–1700 0/36 ---> darker skin
I0073 Minoan 2000–1700 13/13
I0074 Minoan 2000–1700 3/3
I9005 Minoan 2000–1700 13/13
I9010 Mycenaean 1700–1200 4/4
I9041 Mycenaean 1700–1200 5/12
I9033 Mycenaean 1416–1280 2/3
I9006 Mycenaean 1411–1262 9/10
I2499 Bronze Age Anatolian 2836–2472 0/1 ---> darker skin
I2495 Bronze Age Anatolian 2558–2295 12/13
I2683 Bronze Age Anatolian 2500–1800 6/23
And another gene which lightens skin pigmentation:
TYR, rs1042602, lighter skin, absence of freckles
Sample Population Date BC Derived/Total
I2937 Neolithic Greek 5460–5378 0/1 ---> less light skin
I9130 Minoan 2900–1900 0/1 ---> less light skin
I9131 Minoan 2900–1900 1/1
I0070 Minoan 2000–1700 5/5
I0071 Minoan 2000–1700 9/22 ---> a bit less light skin
I9005 Minoan 2000–1700 2/9 ---> a bit less light skin
I9010 Mycenaean 1700–1200 3/3
I9041 Mycenaean 1700–1200 4/5
I9033 Mycenaean 1416–1280 3/3
I9006 Mycenaean 1411–1262 11/11
I2499 Bronze Age Anatolian 2836–2472 0/1 ---> less light skin
I2495 Bronze Age Anatolian 2558–2295 0/1 ---> less light skin
I2683 Bronze Age Anatolian 2500–1800 0/6 ---> less light skin
So the Mycenaeans had - on average - slightly lighter skin than the Minoans.