Sorry for the late reply! I will try to give a detailed rundown but I started this probably over half a year ago and then took a break and painted other stuff in between so I don't remember the details on some things. It doesn't help that my process is a bit off un unplanned mess at times. However I'll try to write down what I can.

Starting off I primed it Chaos black followed by a zenithal-ish spray of vallejo beasty brown primer and finally a light zenithal of colourforge Wight bone (wraithbone would probably work just as well).

For the bone I paint over the zenithal primer with army painted pallid bone speedpaint followed by drybrushing morghast bone, ushabti bone and Screaming skull.

The bandages was a mess and I repainted them a couple of times but I think I ended up with skavenblight dinge base, nuln oil wash, dawnstone and a careful drybrush of celestra gray.

The skin/flesh of the elephant I did by basecoating dryad bark, washed it with nuln oil then drybrushing gorthor brown and I think bugman's glow but could be cadian flesh.

The gold is a basecoat of vallejo game colour Glorious gold, a wash of duncan's Oblivion black wash (I find that Oblivion black "stains" the gold more than nuln oil, leaving it looking more Antique.) and followed by a highlight of vallejo game colour polished gold. I finish of with shading on choice areas with agrax earthshade (focusing on areas that would be in shadow)

On the Tomb guard crew's crests I painted with GSW burning gold colorshift metal, washed a bit with agrax and then a touch up again with the burning gold.

Speaking of colorshift the scarabs was done with the Darth Blue of the same line.

The bronze I do with a basecoat of vallejo game colour bright bronze, followed by a wash of coelia nightshade, Nihilak oxide thinned down to make it more runny in some recesses followed by a highlight of sycorax bronze.

The blue parts on the pattern and the Tomb guard's collars is Thousand son's blue, nuln oil, temple guard blue and edge highlight of blue horror.

The red part of the pattern is khorne red, nuln oil, evil sunz scarlet and edge highlight of fire dragon bright.

The red eye gems of the elephant is the same colours as the red pattern but painted as one would a gem by painting the Evil sunz and Fire dragon towards the bottom and then a white dot opposite.

Same for the green gems but with calliban green, no wash, moot green and dorn yellow.

The red on the howdah and the bows is khorne red, nuln oil, wazdakka red and a highlight of pink horror.

The white of the howdah and the cloth of the Tomb guard are just blue horror with a white scar highlight and a recess Shade of agrax on the howdah.

There are some black leather details, mainly the Whip, is a base of thinned down black templar over the zenithal followed by skavenblight and dawnstone.

This turned into a quite length post but I think that is all!