I've recently bought young clones of some variegated foliage forms of Den. moniliforme.
In Japan, variegated forms of Den. moniliformes are specially called as "Chouseiran 長生蘭 (Long-life orchids)," and are highly regarded by horticulturists since Edo period.
Shodai (昭代)
White-edged variegation (fukurin 覆輪), with short round leaves. Leaves has wrinkled looks (so-called rasa-form). Newly emerging leaves have pinkish glow on them, which slowly disappears. Stays relatively short even after full growth. It is regarded as a classical Chouseiran in Japan.
Kinryuu (金竜, Golden Dragon)
Golden-yellow edged form of the species.
Ginryuu (銀竜, Silver Dragon)
Supposedly a mutation of Kinryuu. As the name suggests, it has white edges instead of yellow.
GeumSong (金松, Golden Pine)
A variety developed from Korea. It has irregular bright yellow variegation. Very pretty.
As you can imagine, controlling spider mites are even more important than standard non-variegated forms...and I've just saw some spider mites this morning...time to wage some serious war against them I guess.