Complex sentence: Between 1961 and 1963, there were three different grille cloth colors: wheat, brown, and maroon and many tolex-grille color combinations are found suggesting that Leo Fender and Co. was not hesitant to use up whatever stocks of materials were on hand.
Split into simpler sentences: Between 1961 and 1963, there were three different grille cloth colors: wheat, brown, and maroon and many tolex-grille color combinations are found. This suggests that Leo Fender and Co. was not hesitant to use up whatever stocks of materials were on hand.