<s>
Kaleidoscope	B-Operating_System
is	O
a	O
third	O
party	O
theme	O
manager	O
for	O
System	B-Operating_System
7	I-Operating_System
and	O
Mac	B-Operating_System
OS	I-Operating_System
8	I-Operating_System
,	O
written	O
by	O
Arlo	O
Rose	O
and	O
Greg	O
Landweber	O
.	O
</s>
<s>
It	O
utilizes	O
a	O
proprietary	B-Application
framework	O
to	O
apply	O
"	O
schemes	O
"	O
to	O
the	O
Macintosh	O
GUI	O
,	O
long	O
before	O
Apple	O
released	O
the	O
Appearance	B-Operating_System
Manager	I-Operating_System
system	O
with	O
Mac	B-Operating_System
OS	I-Operating_System
8	I-Operating_System
(	O
later	O
updated	O
in	O
Mac	O
OS	O
8.5	O
,	O
providing	O
similar	O
functionality	O
using	O
"	O
themes	O
"	O
)	O
.	O
</s>
<s>
Whereas	O
only	O
a	O
few	O
Appearance	B-Operating_System
Manager	I-Operating_System
themes	O
were	O
ever	O
developed	O
,	O
tens	O
of	O
thousands	O
of	O
Kaleidoscope	B-Operating_System
schemes	O
were	O
developed	O
.	O
</s>
<s>
When	O
theme	O
support	O
in	O
the	O
Appearance	O
Control	O
Panel	O
was	O
first	O
announced	O
,	O
the	O
team	O
responsible	O
for	O
it	O
demonstrated	O
an	O
automatic	O
tool	O
specifically	O
designed	O
to	O
convert	O
existing	O
Kaleidoscope	B-Operating_System
scheme	O
files	O
into	O
Appearance	O
Manager-compatible	O
theme	O
files	O
.	O
</s>
<s>
Kaleidoscope	B-Operating_System
remained	O
the	O
primary	O
theme	O
platform	O
,	O
even	O
after	O
the	O
Appearance	O
Control	O
Panel	O
offered	O
theme	O
capabilities	O
in	O
Mac	O
OS	O
8.5	O
.	O
</s>
<s>
At	O
the	O
same	O
time	O
,	O
the	O
format	O
of	O
Kaleidoscope	B-Operating_System
schemes	O
continued	O
to	O
evolve	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
Kaleidoscope	B-Operating_System
schemes	O
proliferated	O
while	O
Appearance	O
themes	O
never	O
really	O
did	O
.	O
</s>
<s>
Kaleidoscope	B-Operating_System
was	O
only	O
rendered	O
obsolete	O
with	O
the	O
transition	O
to	O
Mac	O
OS	O
X	O
,	O
with	O
which	O
Kaleidoscope	B-Operating_System
is	O
not	O
compatible	O
.	O
</s>
