OK Norm... Here goes
Red-Brown Leather
Base- 875 Beige Brown + 950 Black + 908 Carmine
Highlights- Base + 875 + 929 Light Brown + 845 Sunny Skin Tone
Shadows- Base + 950 Black
Gold (bright)
Base with Brass, wash with Brown, Highlight with Gold, 2nd highlight with silver
Silver
Base with 864 Natural Steel, wash with Black, highlight with Silver
Steel
Base with 863 Gunmetal, wash with Black, highlight with 864 Natural Steel
White Cloth
Base-951 White + 989 Sky Grey + 921 English Uniform
Highlights- Base + White
Highlight 2- White
Shadows- Base + 989 + 921 + touch of 950 Black
Black Cloth [Brown undertone (blue undertone)]
Base- 950 Black + 989 Sky Grey + [921 English Uniform (965 Prussian Blue)]
Highlights- Base + [921 (965)] + 951 White
Shadows- Base + Black
There is a really good thread dealing with Bronze in the 'Painting Forum'.
All Ratios are by eye again.
Hope these work for you.
Colin