My user name says it all. I'm an idiot.

We're suppose to make retinal drawings but I haven't the foggiest idea of what colors to use. There are standard colors used for things. I just don't know what some of them are. The chief said to "just use red"

Help? You know that I'm desparate when I ask a question here.
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On the internet, after much searching, I found this...correct? I thought there are more colors than this, but it's a start. Also, anyone that knows anything, please comment on this information as it may not be completely correct.....
• Red for hemorrhage, flat retina and retinal hole.
• Blue for detached retina, retinal veins and outline of retinal tear.
• Green for vitreous pathology.
• Brown for choroidal findings.
• Black for changes to the retinal pigment epithelium and blood
vessels.
• Yellow for retinal exudates.
• Black hatchings outlined in black for lattice degeneration.

i am a bigger eyeidiot than you, but according to Wilson's Practical Ophtho

1. Red: retinal arterioles, attached retina (light red or uncolored), retinal hemorrhage, microaneurysms, retinal break or hole
2. blue: retinal venules, detached retina, outline of retinal break or hole
3. orange: elevated neovascularization
4. yellow: exudate, edema
5. green: vitreous opacity (eg hemorrhage)
6. brown: pigmentation, detached choroid
7. black: ora serrata, drusen, hyperpigmentation

See page 308, table 13.6

I just use my pen right now, although I'm sure it would be better in color.