Most likely:
Red hair
Blue or grey eyes
Fair skin
Nowadays, many Rh- negatives have hazel eyes and central heterochromia which are basically our blue/grey-eyed genes shining through despite brown-eyed people in our Ancestries.
Similar to Auburn, strawberry blonde, reddish hair. Many of us also have different hair colours, e.g. having brown hair, yet a reddish beard.
As for skin tone:
If you have freckles, they may easily express the skin tone of an ancestor or ancestors darker than you.
The above thoughts are mine only and.if you wish to know the sources of my conclusions, you will find them in previous posts.