Sulfur is in paint.

...One paint chemists told me that the sulfur content in ultramarine is so strong that it can be smelled in the dry pigment and that it should not be mixed with lead....

Sulfide: (sulphide) a sulfur atom attached to two carbon atoms. A binary compound (as CuS) of sulfur usually with a more electropositive element or group: a salt of hydrogen sulfide. In mixtures with lead the resulting compound, lead sulfide, is black in color. Pigment examples: Cadmium Sulfide (all cadmium colors), Mercuric Sulfide (Genuine Vermilion), Sodium Sulfosilicate (Ultramarine Blue: sulfur is used in the preparation of Ultramarine Blue and its variants. One paint chemists told me that the sulfur content in ultramarine is so strong that it can be smelled in the dry pigment and that it should not be mixed with lead.)

Sulfates and Sulfites: are salts or esters of sulfuric or sulfurous acids. In mixtures with lead these salts produce lead sulfate, the white scales visible on storage batteries. Since the product of this reaction is white, it does not harm the color of a painting. Safe pigments include: Cerulean Blue which is made with cobalt sulfate calcined with stannous (tin) chloride. Manganese Blue combines barium manganate with barium sulfate. A sulfate is also used in the production of Ferric ammonium ferrocyanide (Prussian Blue) and Titanium Anatase white, while sulfuric acid is used to produce Thioindigoid red (PR 88).
Source:  http://www.sanders-studios.com/instruction/tutorials/historyanddefinitions/pigmentchem.html